Peonies are native to Asia, Europe and Western North America.
About ants on Peony Flower buds: Many plant species have special glands on their stems that produce sugary secretions which attract ants. It's not just plants either. Insects such as aphids and leafhoppers famously excrete honeydew that ants can't resist. In each of these cases, organisms are using the ants' natural tendency to guard a food source. The ants will viciously attack anything that threatens this easy meal. Peonies are doing just that with their flower buds. By secreting a sugary substance during their development, the plant are likely recruiting ants to protect the flowers, which for angiosperms, are the most precious part of the plant. It takes a lot out of a plant to flower and the threat of herbivory is ever present. If an insect tries to take a bite out of a bud, the ants quickly swarm and drive it off. It's a win-win situation. The ants get an easy, high-energy food source and the plant suffers less damage to its reproductive organs.
Paeonia 'Coral Sunset' (Peony)
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